4I9D

X-ray structure of NikA in complex with Fe-N,N'-Bis(2-pyridylmethyl)-N-carboxymethyl-N'-methyl

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	Nickel-binding periplasmic protein	polymer	502	56360.7	2	UniProt (P33590) Pfam (PF00496)	Escherichia coli
2	AA, C, CA, D, DA... (A, B)	ACETATE ION	non-polymer		59.0	25	Chemie (ACT)
3	BA, E, H, HA, IA... (A, B)	GLYCEROL	non-polymer		92.1	21	Chemie (GOL)
4	F, G (A)	SULFATE ION	non-polymer		96.1	2	Chemie (SO4)
5	GA, WA (A, B)	{(S)-N-(2-{methyl[(pyridin-2-yl-kappaN)methyl]amino-kappaN}ethyl)-N-[(pyridin-2-yl-kappaN)methyl]glycinato-kappa~2~N,O}iron(2+)	non-polymer		369.2	2	Chemie (L4D)
6	AB, BB (A, B)	water	water		18.0	1197	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	112721.5
Non-Polymers*	Number of molecules	50
	Total formula weight	4340.6
All*	Total formula weight	117062.1

*Water molecules are not included.